Home / 13,317.72-18,378.48-7,349.08

Finding the Fourth Proportional to 13,317.72, 18,378.48 and 7,349.08

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Solution

The fourth proportional to 13,317.72, 18,378.48 and 7,349.08 is: 10,141.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.72 : 18,378.48 = 7,349.08 : x
  2. Step 2: Convert to fraction form
    13,317.72/18,378.48 = 7,349.08/x
  3. Step 3: Cross multiply
    13,317.72x = 18,378.48 × 7,349.08
  4. Step 4: Simplify right side
    13,317.72x = 135,064,919.80
  5. Step 5: Solve for x
    x = 135,064,919.80/13,317.72
  6. Step 6: Final answer
    x = 10,141.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.